Driving Safety: Signals, Signs and Pavement Markings I Questions taken from the PA Drivers' Manual Progress Indicator: Question 2 of 30 2.  What is the first step taken when setting up a technical decon corridor once all responders have on appropriate PPE? p. 467 Choices: Select a location upwind and uphill from the hot zone Establish a secondary decontamination station Establish respiratory protection removal station Place salvage covers for runoff